Watch: Roma concedes 1st home goal of UCL run after Nainggolan error

Radja Nainggolan has had a nightmare.

Following a promising start to Wednesday's clash by Roma, the Belgian scuffed a pass to nobody in the middle of the park. Roberto Firmino picked up the offering and strode upfield before releasing Sadio Mane for a ninth-minute opener at the Stadio Olimpico.

The goal put Liverpool 6-2 ahead on aggregate in the second leg of their Champions League semi-final, and marked the first goal Roma conceded on home turf during this continental term.